<template>
  <div>
    <!-- 面包屑区域 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>
        <a href="/">用户管理</a>
      </el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->

      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容"
                    v-model="queryInfo.query"
                    clearable
                    @clear="getUserList">
            <el-button slot="append"
                       icon="el-icon-search"
                       @click="getUserList"></el-button>
          </el-input>

        </el-col>
        <el-col :span="4">
          <el-button type="primary"
                     @click="addDialogVisible=true">添加用户</el-button>
        </el-col>

      </el-row>
      <!-- 用列表区域 -->
      <el-table :data="userList"
                border
                stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名"
                         prop="username"></el-table-column>
        <el-table-column label="邮箱"
                         prop="email"></el-table-column>
        <el-table-column label="电话"
                         prop="mobile"></el-table-column>
        <el-table-column label="角色"
                         prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <!--  {{scope.row.mg_state}} -->
            <el-switch v-model="scope.row.mg_state"
                       @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作"
                         width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary"
                       icon="el-icon-edit"
                       size="mini"
                       @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger"
                       icon="el-icon-delete"
                       size="mini"
                       @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip class="item"
                        effect="dark"
                        content="分配角色"
                        placement="top"
                        :enterable="false">
              <el-button type="warning"
                         icon="el-icon-setting"
                         size="mini"
                         @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange"
                     @current-change="handleCurrentChange"
                     :current-page="queryInfo.pagenum"
                     :page-sizes="[1, 2, 5, 10]"
                     :page-size="queryInfo.pagesize"
                     layout="total, sizes, prev, pager, next, jumper"
                     :total="total">
      </el-pagination>

    </el-card>

    <!--  添加用户的对话框-->
    <el-dialog title="添加用户"
               :visible.sync="addDialogVisible"
               width="50%"
               @close="addDialogClose">
      <!-- 内容主体区域 -->
      <el-form :model="addForm"
               :rules="addFormRules"
               ref="addFormRef"
               label-width="70px">
        <el-form-item label="用户名"
                      prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>

        <el-form-item label="密码"
                      prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>

        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>

        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <!-- 底部区域 -->
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户"
               :visible.sync="editDialogVisible"
               width="50%"
               @close="editDialogClosed">
      <el-form :model="editForm"
               :rules="editFormRules"
               ref="editFormRef"
               label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username"
                    disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱"
                      prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>

        <el-form-item label="手机"
                      prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色"
               :visible.sync="setRoleDialogVisible"
               width="50%"
               @close="setRoleDialogColsed">
      <div>
        <p>当前的用户：{{userinfo.username}}</p>
        <p>当前的绝色：{{userinfo.role_name}}</p>
        <p>分配新角色:
          <el-select v-model="selectedRoleID"
                     placeholder="请选择">
            <el-option v-for="item in roleList"
                       :key="item.id"
                       :label="item.roleName"
                       :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer"
            class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary"
                   @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  data () {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法邮箱'))
    }
    // 校验手机的规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        // 合法的邮箱
        return cb()
      }
      cb(new Error('请输入合法手机号'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo: {
        query: '',
        // 当前页
        pagenum: 1,
        // 当前显示多少条
        pagesize: 2
      },
      userList: [],
      total: 0,
      addDialogVisible: false, // 控制添加对话框的显示与隐藏
      addForm: { // 添加用户的表单数据
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      addFormRules: { // 添加表单的验证规则
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }
        ]
      },
      editDialogVisible: false, // 修改用户的对话框的显示与隐藏
      editForm: { // 查询到的用户信息对象

      },
      editFormRules: { // 查询表单的验证规则
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }
        ]
      },
      setRoleDialogVisible: false, // 控制分配角色对话框的显示与隐藏
      userinfo: {}, // 需要被分配角色的用户信息
      roleList: [], // 所有角色的数据列表
      selectedRoleID: '' // 已选中的角色id值
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) {
        return this.$message.error('用户列表获取失败！')
      }
      this.userList = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    // 监听pagesize改变的事件
    handleSizeChange (newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码改变的事件
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch开关状态的改变
    async userStateChanged (userinfo) {
      const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新成功')
    },
    // 监听用户对话框的关闭事件
    addDialogClose () {
      this.$refs.addFormRef.resetFields()
    },
    // 添加新用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) return
        // 发起请求，添加新用户
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          return this.$message.error('添加用户失败')
        }
        this.$message.success('添加成功')
        this.addDialogVisible = false // 关闭对话框
        this.getUserList() // 刷新列表
      })
    },
    // 展示编辑用户的对话框
    async  showEditDialog (id) {
      console.log(id)

      const { data: res } = await this.$http.get('users/' + id)
      console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.$message.success('查询用户信息成功')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    editDialogClosed () { // 监听修改用户对话框的关闭事件
      this.$refs.editFormRef.resetFields()
    },
    editUserInfo () { // 修改用户信息并验证
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发起用户的修改请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) {
          return this.$message.error('修改用户信息失败')
        }

        // 关闭对话框
        this.editDialogVisible = false
        // 刷新列表
        this.getUserList()
        // 提示修改成功
        this.$message.success('修改用户信息成功')
      })
    },
    async removeUserById (id) { // 根据id删除对应用户
      // 弹框询问
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => {
        return err
      })
      // 用户确认删除，返回字符串confirm,若取消删除，则返回cancel
      console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      // 删除操作
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        this.$message.error('删除失败')
      }
      this.$message.success('删除成功')
      this.getUserList()
    },
    // 展示分配角色的对话框
    async  setRole (userinfo) {
      this.userinfo = userinfo
      // 在展示对话框前显示所有列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.roleList = res.data
      this.$message.success('')
      this.setRoleDialogVisible = true
    },
    // 点击按钮分配角色
    async  saveRoleInfo () {
      if (!this.selectedRoleID) {
        return this.$message.error('请选择要分配的角色')
      }
      const { data: res } = await this.$http.put(`users/${this.userinfo.id}/role`, {
        rid: this.selectedRoleID
      })
      if (res.meta.status !== 200) {
        return this.$message.error('更新用户角色失败')
      }
      this.$message.success('更新用户角色成功')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    // 分配角色对话框的关闭事件
    setRoleDialogColsed () {
      this.selectedRoleID = ''
      this.userinfo = []
    }
  }
}
</script>
<style lang="less" scoped>
</style>
